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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17757) Unify blocksize after encoding to decrease memory fragment
Date Tue, 02 May 2017 06:54:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15992434#comment-15992434
] 

Hudson commented on HBASE-17757:
--------------------------------

FAILURE: Integrated in Jenkins build HBase-1.4 #714 (See [https://builds.apache.org/job/HBase-1.4/714/])
HBASE-17757 Unify blocksize after encoding to decrease memory fragment (anoopsamjohn: rev
262c66f614d436c15b47ed4ae2ba33ed913c3cac)
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java


> Unify blocksize after encoding to decrease memory fragment 
> -----------------------------------------------------------
>
>                 Key: HBASE-17757
>                 URL: https://issues.apache.org/jira/browse/HBASE-17757
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Allan Yang
>            Assignee: Allan Yang
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-17757-branch-1.v5.patch, HBASE-17757.patch, HBASE-17757v2.patch,
HBASE-17757v3.patch, HBASE-17757v4-branch-1.patch, HBASE-17757v4.patch
>
>
> Usually, we store encoded block(uncompressed) in blockcache/bucketCache. Though we have
set the blocksize, after encoding, blocksize is varied. Varied blocksize will cause memory
fragment problem, which will result in more FGC finally.In order to relief the memory fragment,
This issue adjusts the encoded block to a unified size.



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